Object To proceed our continual search of insecticides and potentially useful pharmaceutics in plants of the Meliaceae family Methods Chemical constituents in the ethanolic extract of the leaves of Toona sinensis (A Juss ) Roem were separated and identified Results 6 compounds were isolated and identified as: 6, 7, 8, 2′ tetramethoxy 5, 6′ dihydroxy flavone (Ⅰ); 5, 7 dihydroxy 8 methoxy flavone (Ⅱ); kaempferol (Ⅲ); 3 hydroxy 5, 6 epoxy 7 megastigmen 9 one (Ⅳ), ethyl gallate (Ⅴ) and scopoletin (Ⅵ) by spectral methods Conclusion Compound Ⅳ was obtained from Toona Roem. for the first time

OBJECTIVETo study the chemical constituents of Illicium henryi.

METHODColumn chromatographic techniques using silica gel, Sephadex LH-20, Rp-8 and Rp-18 as packing materials were applied to isolate constituents. The structures of isolates were determined on the basis of spectroscopic data analyses.

RESULTTwelve compounds were isolated from the rhizomes of I. henryi, which were characterized as balanophonin (1), aviculin (2), rubriflosides A (3), 1,2-bis(4-hydroxy-3-methoxyphenyl)-1,3-propanediol (4), jasopyran (5), kaempferol (6), quercetin (7), (2R, 3R)-3, 5, 7, 3', 5'- pentahydroxyflavan (8), 3, 4, 5-trimethoxyphenyl-1-O-beta-D-glucopyranoside (9), 3, 4-dimethoxyphenyl-1-O-beta-D-glucopyranoside (10), coniferyl aldehyde (11), sinapaldehyde (12), respectively.

CONCLUSIONAll the isolates were obtained for the first time from this plant.

Illicium ; chemistry ; Plant Extracts ; analysis ; isolation & purification ; Rhizome ; chemistry

OBJECTIVETo study the chemical constituents of Piper longum.

METHODThe whole plant of air-dried P. longum. was extracted with 95% EtOH. The EtOH extract was suspended in H2O and extracted with petroleum ether, CHC13 and n-BuOH, successively. The compounds were isolated and purified by column chromatography from the CHCl3 fraction, and identified based on spectral analyses (MS,1H-NMR, 13C-NMR).

RESULTThreeteen compounds were isolated from P. longum, and were characterized as 1-(3',4'-methylenedioxyphenyl)-1E-tetradecene (1), 3-(3', 4'-methylenedioxophenyl)-propenal (2), piperoic acid (3), 3',4'-di-hydroxy-biabola-1,10-diene (4), eudesm-4(15)-ene-1beta, 6alpha-diol (5), 7-epi- eudesm-4( 15)-ene-1beta, 6beta-diol (6), guineesine (7), piperine (8), pipericide (9), 2E, 4E-dienamide (10), (2E, 4E, 8E) -N-isobutylhenicosa-2,4,8-trienamide (11), piperlonguminine (12), methyl piperate (13),

CONCLUSIONCompounds 1-6 were obtained from P. longum for the first time.

Air ; Desiccation ; Organic Chemicals ; analysis ; isolation & purification ; Piper ; chemistry

OBJECTIVETo study the chemical constituents of Piper longum.

METHODThe whole plant of air-dried P. longum was extracted with 95% EtOH. The EtOH extract was suspended in H2O and extracted with petroleum ether, CHCl3 and n-BuOH, successively. The compounds were isolated and purified by column chromatography from the CHCl3 fraction, and identified based on spectral analyses (MS, 1H-NMR, 13C-NMR).

RESULTEleven compounds were isolated from P. longum, and were characterized as coumaperine (1), N-5-(4-hydroxy-3-methoxyphenyl)-2E-pentenoyl piperidine (2), piperolactam A (3), 1-[1-oxo-5 (3,4-methylenedioxyphenyl) -2E,4E-pentadienyl] -pirrolidine (4), 1-[1-oxo-5 (3,4-methylenedioxyphenyl) -2E-pentenyl] -pirrolidine (5), 1-[1-oxo-9 (3,4-methylene dioxyphenyl)-2E, 8E-nonadienyl] -pyrrolidine (6), (R)-(-) -turmerone (7), octahydro-4-hydroy-3alpha-methyl-7-methylene-alpha-(1-methylethyl)-1H-indene-1-methanol (8), (+) -aphanamol I (9), bisdemethoxycurcumin (10), demethoxycurcumin (11).

CONCLUSIONCompounds 1-11 were obtained from P. longum for the first time.

Drugs, Chinese Herbal ; chemistry ; Magnetic Resonance Spectroscopy ; Piper ; chemistry

OBJECTIVETo study the chemical constituents of the Illicium simonsii.

METHODThe stems and leaves of I. simonsii were extracted with 95% EtOH. The EtOH extract was dispersed in H2O and extracted with petroleum, CHCl3 and BuOH, successively. The CHCl3 and BuOH fractions were isolated and purified by column chromatography on silica gel, Sephadex LH-20, Rp-C8 and Rp-C18. The isolated compounds were identified on the basis of spectral analyses (including MS, 1H-NMR, 13C-NMR).

RESULTFourteen compounds were isolated from the stems and leaves of I. simonsii, which were characterized as ficusesquilignan A (1), buddlenol C (2), buddlenol D (3), leptolepisol A (4), acernikol (5), aviculin (6), kaempferol (7), quercetin (8), quercetin 3-O-alpha-L-rhamnopyranosyl-(1 --> 6) -beta-D-glucopyranoside (9), taxifolin-3-O-beta-D-xylopyranoside (10), benzyl-2-O-beta-D-glucopyranosyl-2,6-dihydroxybenzoate (11), 2,4-dihydroxy-3,6-dimethyl-methylbenzoate (12), biondinin C (13), shikimic acid (14).

CONCLUSIONExcept compounds 9 and 14, all the other compounds were obtained from I. simonsii for the first time.

Drugs, Chinese Herbal ; chemistry ; isolation & purification ; Illicium ; chemistry ; Plant Leaves ; chemistry

OBJECTIVETo study the chemical constituents of Swertia macrosperma.

METHODThe air-dried whole plants of Swertia macrosperma were extracted with boiling water. The extract was concentrated to a small amount of volume and extracted with petroleum ether, EtOAc and n-BuOH, successively. The compounds were isolated and purified by column chromatography from the EtOAc fraction, and identified based on spectral analyses (MS, 1H-NMR, 13C-NMR).

RESULTThirteen compounds were isolated from S. macrosperma, and were characterized as norbellidifolin (1), 1-hydroxy-3,7, 8-trimethoxy-xanthone (2), norswertianolin (3), swertianolin (4), 1,3,7,8-tetrahydroxyxanthone-8-O-beta-D-glucopyranoside (5), swertiamatin (6), decentapicrin (7), coniferl aldehyde (8), sinapaldehyde (9), balanophonin (10), together with beta-sitosterol, daucosterol, and oleanolic acid .

CONCLUSIONCompounds 2, 4-10 were obtained from Swertia macrosperma for the first time.

Plant Extracts ; analysis ; isolation & purification ; Swertia ; chemistry

OBJECTIVETo study the chemical constituents of Halenia elliptica.

METHODThe air-dried whole plants of Halenia elliptica were extracted with 90% EtOH. The EtOH extract was condensed to a small amount of volume and extracted with petroleum ether, EtOAc and n-BuOH, successively. The compounds were isolated and purified by column chromatography from the EtOAc fraction, and identified based on spectral analyses (MS, 1H-NMR, 13C-NMR).

RESULT12 compounds were isolated from H. elliptica, and characterized as 8-hydroxy-2-methylchromone (1), 5-methoxy-2-methylchromone (2), 7-epi-vogeloside (3), coniferl aldehyde (4), sinapaldehyde (5), norbellidifolin (6), 1-hydroxyl-2,3,4,6-tetramethoxyxanthone (7), 1-hydroxyl-2,3,4,7-tetramethoxyxanthone (8), 1-hydroxyl-2,3,5-trimethoxyxanthone (9), together with azelaic acid, beta-sitosterol, and oleanolic acid.

CONCLUSIONCompounds 1, 2 were new natural compounds and compounds 3-6, 10 were obtained from H. elliptica for the first time and compound 6 showed inhibitory activities against HBsAg and HBeAg secretion with IC50 value of 0.77 and < 0.62 mmol x L(-1), respectively.

Acrolein ; analogs & derivatives ; analysis ; isolation & purification ; Chromatography ; Dicarboxylic Acids ; analysis ; isolation & purification ; Gentianaceae ; chemistry ; Iridoid Glycosides ; isolation & purification ; Magnetic Resonance Spectroscopy ; Mass Spectrometry ; Oleanolic Acid ; analysis ; isolation & purification ; Plant Extracts ; isolation & purification ; Sitosterols ; analysis ; isolation & purification ; Xanthones ; analysis ; isolation & purification

Sanggenol P (1), a new isoprenylated flavonoid, together with nine known ones, cyclomorusin (2), morusin (3), mulberrofuran G (4), sanggenol A (5), sanggenol L (6), sanggenol N (7), cyclomulberrin (8), cyclocommunol (9) and ursolic acid (10) was isolated from Morus alba L. Sanggenol P (1) was characterized based on extensive IR, UV, 1D and 2D NMR spectroscopic analysis. Compounds 5, 6, 7 and 9 were obtained from this plant for the first time.
Flavonoids ; chemistry ; Molecular Structure ; Morus ; chemistry ; Plant Extracts ; chemistry ; Prenylation

OBJECTIVETo study the chemical constituents of Swertia hispidicalyx.

METHODThe EtOAc part of S. hispidicalyx was chromatographied by various column chromatography methods, and the isolates were identified based on spectroscopic analyses (MS, 1H-and 13C-NMR).

RESULTEleven compounds were isolated from S. hispidicalyx and characterized as 1,3,5,8-tetrahydroxyxanthone (1), 1,5,8-trihydroxy-3-methoxyxanthone (2), gentiolactone (3), swertiamarin (4), 3,4-dihydro-1H,6H,8H-naphtho [1, 2-c:4, 5-c', d'] dipyrano-1,8-dione (5), (+)-syringaresinol (6), trans-coniferyl aldehyde (7), maslinic acid (8), oleanolic acid (9), daucosterol (10), and -sitosterol (11).

CONCLUSIONCompounds 1-11 were obtained from S. hispidicalyx for the first time.

Antiviral Agents ; isolation & purification ; pharmacology ; Hepatitis B virus ; drug effects ; Swertia ; chemistry